Question about Garmin Edge 305 GPS Receiver

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My Garmin 305 edge does not work correctly

Last Wednesday I was using the garmin on my bike and the battery went off. After that is impossible turn off the device. When I connect the garmin to the computer/energy, it turns on and it does not work correctly. I want a full reset in order to know if I can use it again.

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  • yadayada
    yadayada May 11, 2010

    try a reset.

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Hi my own 305 has been doing this also you can perform a soft reboot by pressing the Mode and reset button together for approx ten secs,this will turn unit off and you will lose data but it should stop the problem however if you have a power problem with internal contacts then Contact Garmin, also you can download webupdater for garmin at this address http://www8.garmin.com/support/collection.jsp?product=999-99999-27

Posted on Mar 24, 2010

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Normally with Garmin sat-navs you have to switch the on/off button off and hold for around 8 seconds to reset the device

Posted on Feb 01, 2010

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1 Answer

Garmin edge 305 will not turn on


Hello there,
First thing to check for is the battery of the device. If it is bad, it will not turn on the edge. Try to use a friends battery to see if it will turn on. if it does, then it means the battery is what you need to replace.
But if it is not the battery, then you need to check the charger of the edge if it is still okay, then you need to check the connection port on the edge.
It is definitely not a software problem because if it was it, then the device will turn on but will not get pass the garmin nuvi page.
Would be glad to know if the information was of help to you. Goodluck Elect_Comp

Sep 01, 2011 | Garmin Edge 305 GPS Receiver

1 Answer

Used my garmin edge 305 today on the ride, it worked fine, powered off after the ride. Got home turned on to review my stats and then powered off and went to upload and wouldn't upload, so tried to turn it...


Edge 205 or 305 often crash, then impossible to power on again.

Here is the way to reset the Garmin edge :

Soft reset : hold mode and lap/reset buttons for 10 seconds
Hard reset : device should be powered down, hold start and mode buttons for 3 seconds then pulse press the lap/reset button.

After soft reset, you need to hold start button for up to 10 secs before it starts.

After hard reset, you will loose all your data, including profiles.

Jan 30, 2011 | Garmin Edge 305 GPS Receiver

1 Answer

The edge 305 unit does not answer to hard and soft reset command


Just to be sure ...

Here is the way to reset the Garmin edge :

Soft reset : hold mode and lap/reset buttons for 10 seconds
Hard reset : device should be powered down, hold start and mode buttons for 3 seconds then pulse press the lap/reset button.

After soft reset, you need to hold start button for up to 10 secs before it starts.

After hard reset, you will loose all your data, including profiles

Now if this does not work, you should check battery. Does the device charge when plugged on PC ?
If it does not, either battery is out of order or the contacts inside the device re broken. This may happen if device is used in continuous vibrating environment like mountain bike.

Changing battery or fixing contacts issue is explained there :

http://blog.mtbguru.com/2008/11/06/surgery-on-the-garmin-edge-305/

Jan 04, 2011 | Garmin Edge 305 GPS Receiver

1 Answer

Garmin Edge 305 switches off during use while mounted on the Garmin bike mount. If kept in pocket it works fine. Does it have something to do with the vibration from the bike while on the bike mount?


Could be yes. There are contacts inside the device that become sensitive to vibrations after a while.

I have seen on Internet that it may also be due to USB plug that acts on these contacts.
Anyway in this situation there is no other way than opening the devices and soldering contacts or adding wires to replace these contacts.

As opening device is not at all easy, I recommend you send your device to Garmin support.

Otherwise please check the relevant procedure on the internet

Nov 10, 2010 | Garmin Edge 305 GPS Receiver

1 Answer

The device is blocked


Hi Have had this happen to me also, try pressing the mode and reset at same time also try lightly tapping frame of garmin on desk (easy though). if this still fails put it on your bike and go for spin??? hope first suggestion works as it did fr me

Mar 23, 2010 | Garmin Edge 305 GPS Receiver

1 Answer

My edge 305 doesn't always pick up sallelite. I


Hi If you have the time and patience then log onto garmin and download the webupdater then join the garmin site and plug in your 305 garmin dashboard will update for you and possibly fix it, other than that you will have to send it to garmin, if its still in warranty, 75 dollars if its out of warranty nty

Nov 18, 2009 | Garmin Edge 305 GPS Receiver

1 Answer

I have an edge 305 and use it mountain biking. O rough trails it shuts down. I think it's a loose conection inside the unit. When I stop it will turn right back on.


It is a connection problem inside the device. If it is under warranty you should send back to garmin, otherwise you can apply trick as described at following site :

http://blog.mtbguru.com/2008/11/06/surgery-on-the-garmin-edge-305/

Oct 20, 2009 | Garmin Edge 305 Bundle Includes Hr And...

1 Answer

Short Battery Life in Garmin Edge 305 Cadence


Hello there:
you might want to remove the battery and inspect the connection pins if one of them are bent or loose they will cause this also a loose connection internally will cause this. if this is a warranteed item you might consider using it ok?
best regards michael

Sep 18, 2009 | Garmin Edge 305 GPS Receiver

1 Answer

Garmin 305 Edge and GSC 10 not receiving one another


Solution copied from Garmin



Pairing the Edge 305 and sensors
Once you have installed the Garmin Edge 305 and the cadence sensor they need to be paired. As they communicate wirelessly with each other the Edge needs to connect to each sensor before it can receive input from it.

The initial pairing needs to be done away from other wireless systems this allows the Edge to pick up the sensors it is supposed to be monitoring. This is a little like black magic, but it seems to work quite easily.

The cadence sensor has a small press contact which puts the sensor into pairing mode. The HRM just seemed to connect by itself.

Subsequent pairing is much faster as the Edge 305 seems to remember which sensors it is paired with. If you have problems or need to change one of the sensors then you can use a setup feature to either turn the sensor off or to re-pair it.

Feb 22, 2009 | Garmin Edge 305HR GPS Receiver

2 Answers

Edge 305 turns off at every little bump in the road?


The above link no longer works.
But this one does (for now): http://blog.mtbguru.com/2008/11/06/surgery-on-the-garmin-edge-305/

I made this surgery and it now works great.

Aug 18, 2008 | Garmin Edge 305 GPS Receiver

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